Human G-CSF DTSet enzyme-linked immunoassay kit

Product Features

• Optimized capture and detection antibody pairings with recommended concentrations save lengthy development time
• Development protocols are provided to guide further assay optimization
• Assay can be customized to your specific needs
• Economical alternative to complete kits

Kit Content

• Capture Antibody
• Detection Antibody
• Recombinant Standard
• Streptavidin conjugated to horseradish-peroxidase (Streptavidin-HRP)

Other Reagents Required

DTSet Ancillary Reagent Kit (5 plates): containing 96 well microplates, plate sealers, substrate solution, stop solution, plate coating buffer (PBS), wash buffer, and assay buffer.

• 96 well microplates: YOUKE Life, Catalog # DSEP01. Plate Sealers: YOUKE Life, Catalog # DSSF01.
• Coating Buffer: 137 mM NaCl, 2.7 mM KCl, 8.1 mM Na₂HPO₄, 1.5 mM KH₂PO₄, pH 7.2-7.4, 0.2μm filtered . YOUKE Life, Catalog # DSCB01.
• Blocking Buffer: YOUKE Life, Catalog # DSBB01.
• Wash Buffer: 0.05% Tween^® 20 in PBS, pH 7.2-7.4. YOUKE Life, Catalog # DSWB01.
• Assay Buffer: 0.5% BSA，0.05% Tween^® 20，PBS Solution.YOUKE Life, Catalog # DSAB01
• Substrate Solution: Tetramethylbenzidine. YOUKE Life, Catalog # DSTS01.
• Stop Solution: 0.5mol/ml H₂SO₄. YOUKE Life, Catalog # DSSS01.

Product Data Sheet

Background: G-CSF

Granulocyte-colony stimulating factor (G-CSF) is a 24-25 kDa monomeric glycoprotein that regulates the proliferation, differentiation, and activation of hematopoietic cells in the neutrophilic granulocyte lineage. Mature human G-CSF is a 178 amino acid (aa) O-glycosylated protein that contains two intrachain disulfide bridges. In humans, alternate splicing generates a second minor isoform with a 3 aa deletion. Mouse and human G-CSF share 76% aa sequence identity, and the two proteins show species cross-reactivity. G-CSF is produced by activated monocytes and macrophages, fibroblasts, endothelial cells, astrocytes, neurons, and bone marrow stroma cells. In addition, various tumor cells express G-CSF constitutively. Human G-CSF receptor (G-CSF R) is a 120 kDa type I transmembrane glycoprotein that belongs to the hematopoietin receptor superfamily. The mature protein consists of a 603 aa extracellular domain (ECD), a 23 aa transmembrane segment, and a 186 aa cytoplasmic domain. The ECD contains an N-terminal Ig-like domain, a cytokine receptor homology domain, and three fibronectin type III domains. Alternate splicing of human G-CSF R generates additional isoforms including a potentially soluble form of the receptor. The ECDs of mouse and human G-CSF R share 63% aa sequence identity. G-CSF R forms a complex with the ligand in a 2:2 ratio. It is expressed on monocytes, neutrophils, megakaryocytes, platelets, myeloid progenitors, trophoblasts and placenta, endothelial cells, and various tumor cell types. G-CSF is an important regulator for granulopoiesis in vivo, and mutations in G-CSF R are associated with congenital neutropenia. G-CSF can support the growth of multilineage hematopoietic progenitor cells and mobilize them from the bone marrow into the bloodstream. G-CSF enhances the functional capacity of mature neutrophils and supports their survival by limiting the rate of apoptosis. G-CSF also enhances M-CSF induced monocytopoiesis from hematopoietic progenitor cells and stimulates the proliferation of peripheral Th2-inducing dendritic cells. It promotes the development of T cell immune tolerance as well as tissue recovery following myocardial infarction and cerebral ischemia.